From mboxrd@z Thu Jan 1 00:00:00 1970 From: "William J. Earl" MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <14417.16577.210091.926383@liveoak.engr.sgi.com> Date: Fri, 10 Dec 1999 10:04:49 -0800 (PST) Subject: Re: Getting big areas of memory, in 2.3.x? In-Reply-To: References: Sender: owner-linux-mm@kvack.org Return-Path: To: Ingo Molnar Cc: Rik van Riel , Kanoj Sarcar , Jeff Garzik , alan@lxorguk.ukuu.org.uk, linux-kernel@vger.rutgers.edu, linux-mm@kvack.org List-ID: Ingo Molnar writes: ... > this is possible (sans the relocation process which is a special thing > anyway), but why would we want to allocate large chunks of contiguous user > pages? ... To be able to use, for example, 2 or 4 MB pages on x86 to reduce TLB thrashing (and, if the I/O path understands large pages, the software overhead to set up large direct or raw I/O requests). -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://humbolt.geo.uu.nl/Linux-MM/